mirror of
https://git.dev.opencascade.org/repos/occt.git
synced 2025-05-11 10:44:53 +03:00
8013367c92
New topology-preserving offset algorithm has been added. It allows to construct offset shape of build solid. test cases have been added. Documentation has been updated to be up to date. Minor corrections. Grid is renamed for simplification purposes. Old constructors are restored with Standard_DEPRECATED macros.
184 lines
7.7 KiB
C++
184 lines
7.7 KiB
C++
// Created on: 2016-10-14
|
|
// Created by: Alexander MALYSHEV
|
|
// Copyright (c) 1999-2016 OPEN CASCADE SAS
|
|
//
|
|
// This file is part of Open CASCADE Technology software library.
|
|
//
|
|
// This library is free software; you can redistribute it and/or modify it under
|
|
// the terms of the GNU Lesser General Public License version 2.1 as published
|
|
// by the Free Software Foundation, with special exception defined in the file
|
|
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
|
|
// distribution for complete text of the license and disclaimer of any warranty.
|
|
//
|
|
// Alternatively, this file may be used under the terms of Open CASCADE
|
|
// commercial license or contractual agreement.
|
|
|
|
#ifndef _BRepOffset_SimpleOffset_HeaderFile
|
|
#define _BRepOffset_SimpleOffset_HeaderFile
|
|
|
|
#include <BRepTools_Modification.hxx>
|
|
#include <GeomAbs_Shape.hxx>
|
|
#include <Geom2d_Curve.hxx>
|
|
#include <Standard_Real.hxx>
|
|
#include <Standard_Macro.hxx>
|
|
#include <Standard_Type.hxx>
|
|
#include <TopoDS_Shape.hxx>
|
|
#include <TopTools_IndexedDataMapOfShapeListOfShape.hxx>
|
|
#include <NCollection_DataMap.hxx>
|
|
|
|
|
|
class BRepOffset_SimpleOffset;
|
|
DEFINE_STANDARD_HANDLE(BRepOffset_SimpleOffset, BRepTools_Modification)
|
|
|
|
//! This class represents mechanism of simple offset algorithm i. e.
|
|
//! topology-preserve offset construction without intersection.
|
|
//!
|
|
//! The list below shows mapping scheme:
|
|
//! - Each surface is mapped to its geometric offset surface.
|
|
//! - For each edge, pcurves are mapped to the same pcurves on offset surfaces.
|
|
//! - For each edge, 3d curve is constructed by re-approximation of pcurve on the first offset face.
|
|
//! - Position of each vertex in a result shell is computed as average point of all ends of edges shared by that vertex.
|
|
//! - Tolerances are updated according to the resulting geometry.
|
|
class BRepOffset_SimpleOffset : public BRepTools_Modification
|
|
{
|
|
public:
|
|
|
|
DEFINE_STANDARD_RTTI_INLINE(BRepOffset_SimpleOffset, BRepTools_Modification)
|
|
|
|
//! Constructor.
|
|
Standard_EXPORT BRepOffset_SimpleOffset(const TopoDS_Shape& theInputShape,
|
|
const Standard_Real theOffsetValue);
|
|
|
|
//! Returns Standard_True if the face <F> has been
|
|
//! modified. In this case, <S> is the new geometric
|
|
//! support of the face, <L> the new location,<Tol>
|
|
//! the new tolerance.<RevWires> has to be set to
|
|
//! Standard_True when the modification reverses the
|
|
//! normal of the surface.(the wires have to be
|
|
//! reversed). <RevFace> has to be set to
|
|
//! Standard_True if the orientation of the modified
|
|
//! face changes in the shells which contain it. --
|
|
//! Here, <RevFace> will return Standard_True if the
|
|
//! -- gp_Trsf is negative.
|
|
Standard_EXPORT Standard_Boolean NewSurface (const TopoDS_Face& F,
|
|
Handle(Geom_Surface)& S,
|
|
TopLoc_Location& L,
|
|
Standard_Real& Tol,
|
|
Standard_Boolean& RevWires,
|
|
Standard_Boolean& RevFace) Standard_OVERRIDE;
|
|
|
|
//! Returns Standard_True if the edge <E> has been
|
|
//! modified. In this case, <C> is the new geometric
|
|
//! support of the edge, <L> the new location, <Tol>
|
|
//! the new tolerance. Otherwise, returns
|
|
//! Standard_False, and <C>, <L>, <Tol> are not
|
|
//! significant.
|
|
Standard_EXPORT Standard_Boolean NewCurve (const TopoDS_Edge& E,
|
|
Handle(Geom_Curve)& C,
|
|
TopLoc_Location& L,
|
|
Standard_Real& Tol) Standard_OVERRIDE;
|
|
|
|
//! Returns Standard_True if the vertex <V> has been
|
|
//! modified. In this case, <P> is the new geometric
|
|
//! support of the vertex, <Tol> the new tolerance.
|
|
//! Otherwise, returns Standard_False, and <P>, <Tol>
|
|
//! are not significant.
|
|
Standard_EXPORT Standard_Boolean NewPoint (const TopoDS_Vertex& V,
|
|
gp_Pnt& P,
|
|
Standard_Real& Tol) Standard_OVERRIDE;
|
|
|
|
//! Returns Standard_True if the edge <E> has a new
|
|
//! curve on surface on the face <F>.In this case, <C>
|
|
//! is the new geometric support of the edge, <L> the
|
|
//! new location, <Tol> the new tolerance.
|
|
//! Otherwise, returns Standard_False, and <C>, <L>,
|
|
//! <Tol> are not significant.
|
|
Standard_EXPORT Standard_Boolean NewCurve2d (const TopoDS_Edge& E,
|
|
const TopoDS_Face& F,
|
|
const TopoDS_Edge& NewE,
|
|
const TopoDS_Face& NewF,
|
|
Handle(Geom2d_Curve)& C,
|
|
Standard_Real& Tol) Standard_OVERRIDE;
|
|
|
|
//! Returns Standard_True if the Vertex <V> has a new
|
|
//! parameter on the edge <E>. In this case, <P> is
|
|
//! the parameter, <Tol> the new tolerance.
|
|
//! Otherwise, returns Standard_False, and <P>, <Tol>
|
|
//! are not significant.
|
|
Standard_EXPORT Standard_Boolean NewParameter (const TopoDS_Vertex& V,
|
|
const TopoDS_Edge& E,
|
|
Standard_Real& P,
|
|
Standard_Real& Tol) Standard_OVERRIDE;
|
|
|
|
//! Returns the continuity of <NewE> between <NewF1>
|
|
//! and <NewF2>.
|
|
//!
|
|
//! <NewE> is the new edge created from <E>. <NewF1>
|
|
//! (resp. <NewF2>) is the new face created from <F1>
|
|
//! (resp. <F2>).
|
|
Standard_EXPORT GeomAbs_Shape Continuity (const TopoDS_Edge& E,
|
|
const TopoDS_Face& F1,
|
|
const TopoDS_Face& F2,
|
|
const TopoDS_Edge& NewE,
|
|
const TopoDS_Face& NewF1,
|
|
const TopoDS_Face& NewF2) Standard_OVERRIDE;
|
|
|
|
private:
|
|
|
|
//! Method to fill new face data for single face.
|
|
void FillFaceData(const TopoDS_Face& theFace);
|
|
|
|
//! Method to fill new edge data for single edge.
|
|
void FillEdgeData(const TopoDS_Edge& theEdge,
|
|
const TopTools_IndexedDataMapOfShapeListOfShape& theEdgeFaceMap,
|
|
const Standard_Integer theIdx);
|
|
|
|
//! Method to fill new vertex data for single vertex.
|
|
void FillVertexData(const TopoDS_Vertex& theVertex,
|
|
const TopTools_IndexedDataMapOfShapeListOfShape& theVertexEdgeMap,
|
|
const Standard_Integer theIdx);
|
|
|
|
struct NewFaceData
|
|
{
|
|
Handle(Geom_Surface) myOffsetS;
|
|
TopLoc_Location myL;
|
|
Standard_Real myTol;
|
|
Standard_Boolean myRevWires;
|
|
Standard_Boolean myRevFace;
|
|
};
|
|
|
|
struct NewEdgeData
|
|
{
|
|
Handle(Geom_Curve) myOffsetC; // Resulting curve.
|
|
TopLoc_Location myL;
|
|
Standard_Real myTol;
|
|
};
|
|
|
|
struct NewVertexData
|
|
{
|
|
gp_Pnt myP;
|
|
Standard_Real myTol;
|
|
};
|
|
|
|
//! Fills offset data.
|
|
void FillOffsetData(const TopoDS_Shape& theInputShape);
|
|
|
|
//! Copy-assignment constructor and copy constructor are not allowed.
|
|
void operator=(const BRepOffset_SimpleOffset&);
|
|
BRepOffset_SimpleOffset(const BRepOffset_SimpleOffset&);
|
|
|
|
//! Map of faces to new faces information.
|
|
NCollection_DataMap<TopoDS_Face, NewFaceData> myFaceInfo;
|
|
|
|
//! Map of edges to new edges information.
|
|
NCollection_DataMap<TopoDS_Edge, NewEdgeData> myEdgeInfo;
|
|
|
|
//! Map of vertices to new vertices information.
|
|
NCollection_DataMap<TopoDS_Vertex, NewVertexData> myVertexInfo;
|
|
|
|
//! Offset value.
|
|
Standard_Real myOffsetValue;
|
|
};
|
|
|
|
#endif // _BRepOffset_SimpleOffset_HeaderFile
|